(CNN) -- Details of a genetically altered strain of the deadly avian flu virus are "a grave concern" to public safety and should be kept under wraps, a federal advisory board declared Tuesday. In a letter released by the journals Science and Nature, th… more »

CBS News (AP) BEIJING — A Chinese bus driver who tested positive for the H5N1 bird flu virus died Saturday in a city bordering Hong Kong, health officials said, in the country's first reported case of the disease in humans in 18 months.   The… more »